Installing KB5021233 keeps causing BSOD 0xc000021a

C

Christopher Dut

This was posted in feedback hub, but I am posting it here for community discussion regarding possible long-term solutions that don't involve a reinstallation of windows.21H2 Update installed automatically. During the first reboot BSOD appeared. Rebooted. BSOD appeared again. Automated repair did not fix. Did a system restore to before update ("windows modules installer worker" as restore point option), didn't work. SFC didn't work. Check disk didn't work. DISM revert pending actions didn't work. Eventually was able to boot by disabling driver signature enforcement from the recovery environment

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